No. It's a lockout. You can't lockout employees who are willing to work (players are not striking; this is important) and replace them that way. Against labour laws in most jurisdictions.

"In the United States, under federal labor law, an employer may hire only temporary replacements during a lockout. In a strike, unless it is an unfair labor practice (ULP) strike, an employer may legally hire permanent replacements."

In Canada each province has legislation covering Lockout, Strike and Replacement workers. After reading some of the material available, it appears the NHL might be limited to players that aren't under existing contract to the club.